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(No Model.)

2 Sheets-Sheet 1.

J. SGHERER. HATGHWAY GUARD;

Patented June 10', 1884.

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JOHN SOHERER, OF BALTIMORE, MARYLAND.

HATCHWAY-GUARD.

SPECIFICATION forming part of Letters Patent No. 300,138, dated June 10,1884.

(No model.)

T at whom it may concern:

Be it known that I, J OHN SOHERER, of the city of Baltimore, and Stateof Maryland, have invented certain Improvements in SafetyAttachments forElevator-Hatchways, of which the following is a specification.

the platform conducted again to their original positions across theopenings.

In the accompanying drawings, forming a part hereof, Figure I is avertical section of a part of an elevator-platform provided with myinvention, the saidsection being taken through the dotted line as 00,Fig. II. Fig. II is a section of Fig. 1, taken on the dotted line 3 3Fig. I. Fig. III is a section taken on the dotted line 3/ 3/, Fig. II.

A is the casing of the elevator-shaft, which is open at the sides B,where the guard-bars O are situated. (See Fig. II.)

D D are grooves or channels formed by the pieces a of the casing, inwhich the guard bars 0 are adapted to slide. By referring to Fig. I itwill be seen that the channels D have offsets I) immediately below thefloors E of the building. These ofisets are formed of two grooves inreversed angular positions, in order that the guard-bars which rest inthe channels D may enter the said offsets from either above or below thefloors.

' and G G are rods supported in any suitable manner by the platform F ata fixed distance above the same. The rods G and the platform F projectlaterally beyond the guardbars 0. Consequently in the elevation ordepression of the elevator the said bars are carried with the same untilthey enter the offsets b, after which the elevator passes them. Thenormal position of the guard-bars, which is, say, three feet above thefloor, is maintained by means of brackets 0, attached to a spring, 66,and the said brackets project through the the elevator-platform.

casing and into the channels D. Lugs e, fastened to the spring (I, andwhich also eX- tend through the casing A, are forced outward by contactwith the elevator-platform, and carry with them the supporting-bracketsc, which sustain the guard-bars. The guardbars 0 are attached to cordsf, which extend to the top story of the building, and pass over sheavesg. The weights H are fastened to the cords f, and keep them stretchedand tightened; but the weights being lighter than the bars 0, the saidbars naturally assume their normal position when not in contact withAdditional weights I, through which the cords pass when not in use, areseated on fixed shelves or brackets K, and are elevated with the mainweights H as the guard-bars O are depressed below their normal positionby the elevator in its descent, and the combined weights serve tore-elevate the guard-bars after the platform has passed the offsets towhich the said bars have been conducted. It will be understood that whenthe elevator is below a floor and the guardbars in their normal positionabove the said floor the said bars, in the upward movement of theelevator, are carried up and sustained by the rods G, and if theplatformis stopped at the said floor ample space is left below theguard-bars to admit of the platform being loaded or unloaded; but in thecontinued elevation of the platform the rods G carry the guard-bars O tothe first ofisets b which they pass, and as the guard-bars descend theyare caught by the platform and again conducted to the said offsets, inwhich they are held until the platform has passed, when they fall totheir normal positions. .In the downward movement of the elevator theoperation of the platform and the rods G is reversed, the platformacting first.

I claim as my invention- 1. In an elevator, the casing of the shaft,having vertical channels extending from one floor to another, withoffsets therein formed of angular grooves reversed in position,substantially as described, guard-bars with their ends adapted to slidein the said channels and to the offsets from either end thereof,

Weighted cords which pass over sheaves and and their supports 0, thecord f, sheaves g, are attached to the said guard-bars, and the WeightsH and I, and shelf K, substantially as platform, which is constructed tocome in conand for the purpose specified. tact with the said guarctbarsand elevate or 5 depress them from the channels to the said Vitnesses:

offsets, all. combined substantially as specified. Guns. B. OAssiiDY,

2. In combination with the guard-bars O IDANL. FISHER.

JOHN SCHERER.

